Lithium battery and anode material thereof

Abstract

A lithium battery and an anode material thereof are provided. The anode material for a lithium battery includes a spinel-structured high entropy oxide represented by (Ni a Mn b Fe c M1 d M2 e ) 3 O 4 , where M1 and M2 are independently selected from Co, Ti, Sn, Si, Al, Cu, Zn, Mg, Ca, Mo, Ru, Zr, or Nb, a+b+c+d+e=1, 0.01<a<0.35, 0.01<b<0.35, 0.01<c<0.35, 0.01<d<0.35, and 0.01<e<0.35.

What is claimed is: 
     
         1 . A anode material for a lithium battery, comprising:
 a spinel-structured high entropy oxide represented by (Ni a Mn b Fe c M1 d M2 e ) 3 O 4 , wherein M1 and M2 are independently selected from Co, Ti, Sn, Si, Al, Cu, Zn, Mg, Ca, Mo, Ru, Zr, or Nb, a+b+c+d+e=1, 0.01<a<0.35, 0.01<b<0.35, 0.01<c<0.35, 0.01<d<0.35, and 0.01<e<0.35.   
     
     
         2 . The anode material for a lithium battery according to  claim 1 , wherein ratios of metal elements of the spinel-structured high entropy oxide per 750 μm 3  volume are the same. 
     
     
         3 . The anode material for a lithium battery according to  claim 1 , wherein M1 and M2 are independently selected from Co or Ti. 
     
     
         4 . The anode material for a lithium battery according to  claim 1 , wherein the spinel-structured high entropy oxide comprises (Ni 0.2 Co 0.2 Mn 0.2 Fe 0.2 Ti 0.2 ) 3 O 4  or (Ni 0.2 Co 0.2 Mn 0.2 Fe 0.2 Sn 0.2 ) 3 O 4 . 
     
     
         5 . The anode material for a lithium battery according to  claim 1 , further comprising a conductive agent, and based on a total weight of the anode material for a lithium battery, a content of the conductive agent is 30 wt % or less. 
     
     
         6 . The anode material for a lithium battery according to  claim 5 , wherein the conductive agent comprises graphite, carbon black, carbon fiber, carbon nanotube, acetylene black, mesocarbon microbead (MCMB), graphene, or a combination thereof. 
     
     
         7 . The anode material for a lithium battery according to  claim 1 , further comprising a binder, and based on a total weight of the anode material for a lithium battery, a content of the binder is 20 wt % or less. 
     
     
         8 . The anode material for a lithium battery according to  claim 7 , wherein the binder comprises styrene-butadiene rubber latex (SBR), carboxymethyl cellulose (CMC), polyvinylidene difluoride (PVDF), polyimide, acrylic resin, butyral resin, polytetrafluoroethylene latex (PTFE), polyacrylate (PAA), or a combination thereof. 
     
     
         9 . A lithium battery comprising:
 a cathode;   an anode made from the anode material for a lithium battery according to  claim 1 ;   a separator located between the cathode and the anode; and   an electrolyte.   
     
     
         10 . The lithium battery according to  claim 9 , wherein a material of the cathode comprises lithium metal, lithium cobaltate (LiCoO 2 ), lithium manganate (LiMn 2 O 4 ), lithium iron phosphate (LiFePO 4 ), lithium nickelate (LiNiO 2 ), lithium cobalt nickel oxide (LiCoNi 1-X O 2 , X<1), or lithium nickel cobalt manganese aluminum oxide (LiNi 1-x-y Co x N y O 2 , N is Mn and Al, x+y<1).